Tire boot



Jan. 24, 1933.

J. PANYARD TIRE BOOT Filed Sept. 19,

' JNVENTOR. 0/0/20 FPa qa/"d BY p E ATTORNEYJ Patented Jan. 24, 1933 UNITED STATES DETROIT,

MICHIGAN 1 Application filed September My invention relates to reinforcing elements which. are commonly used .to

strengthen worn or weakened portions of automobile tire casings and has particular reference towhat are commercially known as boots for the tire casing. c

When the casing of an automobile tire becomes lacerated or cut in such a way asto easily permit exposure of the inner tube to nails, tacks, sharp stones and the like it is customary to place one of these tire boots inside the casing over the worn spot therein to protect the inner tube.

Various types of boots are known to the art. The boot may be placed loosely in the tire between the casing and inner tube; it may have a lacing which is secured together over the tube; it may have wings in the form of extending fabric margins which are folded over the edge of the casing; or it .may be studded throughout its entire casing contacting surface with sharp pointed tacks which are driven into the casing by the pressure of the tube. 7

All these types possess disadvantages.

They fail to hold their place, or bulge through the hole in the casing or'in case of the studded one tear the casing. v V I My improved tire boot isadapted to retain positively its position in the casing without wear or tearing of the casing and with- ,out protrusion through the hole in-the casing.

In accomplishing the above purpose an object of my invention resides in the provision of a tire boot which may beplacedin the tire casing over a. weak or cut portionthereof and firmly anchored in this position at a point along the reinforced edges of the side walls of the tire casing.

A further object of my invention is to devise means for anchoring the tire boot so that the contacting of the booted'portion of the tire with the road will have no tendency to wear away the tire casing.

Another object of my invention is to provide a tire boot having anchoring means which become more firmly anchored in the proper position and to the reinforced portion of the casinga's more pressure is exerted thereon by the inner tube.

1911959. Serial no; 393,679. p

' further object of 'myfinventiongis" provide a tire boot which is more eflicient and Further meritorious features and objects less expensive to manufacturethan'the boots of my invention will become apparentlwith the following description accompanied by thedrawmg wherein like numerals refer to like parts throughout the several figures and .wherein; V v

j Fig. 1 a plan'view Of my novel boot.

[ f o pe l ori choring means' inserted therein.

2 "s a cross section of ajtirecasing having a boot provided withmynovel an p i Fig. 3 is a 'view' taken on the same Fig. 2 showing a modified form. v

For the outer surface'l, of my tire'bootI utilize any sortof tough reinforcing material such as the fabric whichis used in the making of'ordinary tire casings. On one side of the layer 1;, I'place anotherlayer 2, which may likewiseconsist of'fabric reinforcing mate rial, or maybe rubber obtained from cast ofi inner tubes. This second layerof tire boot protrudes beyond-*the'outeredge of the layerl andapluralityof reinforcing stri s are laid transversely of-thereinforcing e ements'between "the layers thereof, extending beyond the lateral edges of vthe outer layer 2 on each side thereof; These two layersare firmly secured together to retain the *transver'se'members 3 in their spaced apart posif tion. I i 3 Any desirable means of securing the layers with (the transverse members therebe'tween may be utilized. A very economical and satisfactory means of so,doing, however,is to vul'canizethe two'layers together after hav ing placed' the transverse members in' their proper position therebetweenr Each of. these transverse members isprovided at its outer.

extremity :with a slight outward bend 14in the-direction of the outer reinforcingla 'er whichis designed to; provide an anchoring means for retaining the assembly in position within the casing.

When the boot is placed in the tire casing Y 5; the 'bent over portions 4 of the transverse members 3 anchor themselves in the side wall of the tire casing, over What is customarily called the toe portion thereof above the beading 7 of the side Walls. The rim 8 of the tire tends to press the bent-over portions 4:

i 5 against the toe of the casing and a firm an-' chorage is thereby obtained. It obvious that as 'theinnerftube is inflated a greater pressurewill be exerted around the inner c-1r'-: cumference of the tire boot tending to press 7 lo the same more firmly against the casing and producea still firmer anchorage. 1 It is obvious that innumerable modifica;

tions and changes of-my structure maybe devised to accomplish the same object. As illustrative of the principle involved I have sh w t tran v r me b 3" a ei narrow strips ot spring steel andsecured bemen t o. ay r Qt ein rc g? mate a Certain objectsof my invention mightbe attained by attachingthese anchoring memhers only to the outer-extremities of the tire 'beotbysatisfactory meansr Itn ight not be 7 necessary to utilize two layers ofreinfor cing 7 material. I have simply shown a preferred embodiment designed'to provide a yery adr vantageous means, of anchoring the-boot V.

" Within the tire casing. I j a I .Preferablythe outwardly turned endsof the steel strips aredisposed toengage inthe reenforced edge portions or beads of the casing'where any-tendency to tear the casing is reduced to a minimum and the boot is held securely place by the embeddingof the ends of the strips in thesereinforced head pore ttions. f These steel strips may be extended-to an: chor injthe bead portions of the casing as in Fig; 3, The strips serve atiall times to maintain the contour of the boot andprevent its p'rotruding through the hole in the casing; V Asabove stated vario.usmodificati ons of i v inventionvvill be apparent toithos'e skilled inthe art and'L therefore, intend-to limitmyself-{only Within the scope of the appended V claims. 7.

Iclaiin; j V -1.A.tire boot comprising a flexible piece otreenforoing material, and resilient means extending transversely through said material as. a d bey n t d s h e apte o a chor in' the side walls of the tire casing-beren he dg f ai fo in mat r l- 2 A tire boot eomprisinga plurality of layers. of flexible reinforcing material and a 1 5 plurality; of resilient metal lic" strips extend ing transversely through said layers at Iongitudinally spaced apart intervals, the extremities of each of said strips projecting beyond'the edge of the reinforcing materiala-nd as being reversely curved to engage the bead of a ti e ca in I r I I a In testimony whereof l, JOHN. F.7PAN- r4120, sign this specification. 1

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